SKU 0088300

The Aqua TROLL 400 simplifies decision making with a fixed set of sensors that measure:

  • Actual and specific conductivity, salinity, total dissolved solids, resistivity and density
  • Dissolved oxygen (optical RDO®)
  • ORP
  • pH
  • Temperature
  • Water level and water pressure (absolute)

Rugged and compact, the Aqua TROLL 400 can be deployed for months of unattended operation in harsh field conditions. And because it’s easy to install and maintain, you save on training and reduced trips to the field.

Open communication protocols easily interface with your existing telemetry system. Access data anytime with a radio, controller, data logger, sampler, telemetry system, SCADA/PLC system, or HydroVu Data Services.


VuSitu Mobile App

Streamline data management with convenient Log Set-Up and Calibration Assistants, instrument diagnostics, panoramic live data, and seamless translation into multiple languages delivered right to your smartphone or tablet. Instantly access each of your sites, view and share data from anywhere, and receive automatic event alerts.

RDO® Dissolved Oxygen

In-Situ’s patented dissolved oxygen sensors are easy to use, with a multilayer, abrasion-resistant formulation; a smart cap that carries calibration onboard; and instant hydration.

3D Factory Calibration

Unlike typical pressure sensors, ours are calibrated across full pressure and full temperature for accuracy regardless of depth. Save time and money with pre-calibrated sensors that are linear from the factory.

Expandable Instruments

Double the number of sensors without doubling the amount of cable. Use In-Situ’s Rugged Cable Splitter to deploy two instruments together. Assign each instrument to a unique Modbus address and communicate with the instruments via telemetry or PLC.


Pond Aquaculture

Monitor dissolved oxygen and control aerator function to protect stocks and increase yields.

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Surface Water

Monitor inland or coastal water easily and accurately with equipment designed to work together.

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Monitor groundwater, surface water and air, both during and after in-situ treatment of contaminated groundwater.

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Manage water entering, moving through and leaving a mine site.

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